KR101206285B1 - Display device capable of adjusting viewing angle and fabrication method the same - Google Patents

Abstract

The present invention relates to a display device capable of selectively switching a wide viewing angle and a narrow viewing angle, comprising: a display panel displaying an image; And a switching panel attached to the display panel and selectively implementing a wide viewing angle mode and a narrow viewing angle mode according to whether an electric signal is applied, and including a switching panel divided into a light transmitting region and a non-light emitting region by an electrochromic material. To provide.

Wide viewing angle, narrow viewing angle, display device, electrochromic material

Description

DISPLAY DEVICE CAPABLE OF ADJUSTING VIEWING ANGLE AND FABRICATION METHOD THE SAME}

Brief Description of the Drawings Fig. 1 is a diagram briefly showing a configuration of a display device according to the present invention.

Figure 2 is a view showing a switching panel for adjusting the viewing angle according to the present invention.

3A and 3B show an embodiment according to the present invention, FIG. 3A is a plan view, and FIG. 3B is a sectional view taken along the line II ′ of FIG. 3A.

4 is a cross-sectional view showing another embodiment of the present invention.

5A and 5B show another embodiment according to the present invention, FIG. 5A is a plan view, and FIG. 5B is a sectional view taken along the line II-II 'of FIG. 5A.

6A and 6B show another embodiment according to the present invention, FIG. 6A is a plan view, and FIG. 6B is a sectional view taken along line III-III 'of FIG. 6A.

7A and 7B show another embodiment according to the present invention, FIG. 7A is a plan view, and FIG. 7B is a sectional view taken along line IV-IV 'of FIG. 7A.

8A and 8B show another embodiment according to the present invention, FIG. 8A is a plan view, and FIG. 8B is a sectional view taken along the line VV 'of FIG. 8A.

Figures 9a and 9b show another embodiment according to the present invention, Figure 9a is a plan view, Figure 9b is a cross-sectional view of the VI-VI 'of Figure 9a.

*** Explanation of symbols for main parts of drawing ***

201, 301, 401, 501, 601: first transparent substrate

202, 302, 402, 502, 602: second transparent substrate

220, 320, 420, 520, 620: switching panel

211, 311, 411, 511, 611: transparent electrode and transparent electrode pattern

235, 335, 435, 535, 635a: non-light emitting pattern

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device, and more particularly, to a display device and a method of manufacturing the same capable of selectively switching a wide viewing angle mode and a narrow viewing angle mode.

Liquid crystal display devices are mainly used as flat panel display devices having high quality and low power. The liquid crystal display device is bonded so that the thin film transistor array substrate and the color filter substrate face each other at uniform intervals, and a liquid crystal layer is formed between the thin film transistor array substrate and the color filter substrate.

In the thin film transistor array substrate, pixels are arranged in a matrix form, and a thin film transistor, a pixel electrode, and a capacitor are formed in a unit pixel, and the color filter substrate is a common electrode and an actual color for applying an electric field to the liquid crystal layer together with the pixel electrode. An RGB color filter and a black matrix are formed to implement the.

On the other hand, an alignment layer is formed on the opposite surface of the thin film transistor array substrate and the color filter substrate, and rubbing is performed so that the liquid crystal layer is arranged in a constant direction. At this time, the liquid crystal is rotated by dielectric anisotropy when an electric field is applied between the pixel electrode formed for each unit pixel of the thin film transistor array substrate and the common electrode formed on the front surface of the color filter substrate, thereby allowing light to pass through or blocked for each unit pixel. Characters or images are displayed. However, the above-described twisted nematic mode liquid crystal display device has a disadvantage in that the viewing angle is narrow.

Therefore, in recent years, in order to widen the viewing angle, various methods such as in plane switching (IPS) mode, vertically aligned mode (VA mode), reverse rubbing mode, domain divided twisted nematic (DDTN) mode, etc. Liquid crystal display modes have been developed, thereby obtaining a liquid crystal display having a much wider viewing angle than the conventional twisted nematic (TN) mode. However, a liquid crystal display device used for a notebook personal computer (PC) or the like may require a narrower viewing angle in terms of security and privacy. Therefore, there is a need for a method of controlling the viewing angle to be wide or narrow in one liquid crystal display.

Accordingly, the present invention provides a display device capable of selectively switching a wide viewing angle mode and a narrow viewing angle mode, and a manufacturing method thereof.

Other objects and features of the present invention will be described in detail in the configuration and claims of the following invention.

A display device of the present invention for achieving the above object is a display panel for displaying an image; And a switching panel attached to the display panel to selectively implement a wide viewing angle mode and a narrow viewing angle mode according to whether an electric signal is applied, and divided into a transmissive region and a non-transmissive region by electrochromic materials.

The width of the transmissive area is 80-100 μm, and the width of the non-transmissive area has 20 μm or less. The narrow viewing angle is determined by the height of the non-transmissive area, and the display panel may be a liquid crystal display (LCD) panel. In this case, the display panel further includes a backlight for generating light.

The display panel may be one of a plasma display panel (PDP) panel, a field emission display (FED) panel, an electric luminescence (EL) panel, and a vacuum fluorescent display (VFD) panel.

In addition, the switching panel, the first transparent substrate; A transparent electrode layer formed on the front surface of the first transparent substrate; It is formed repeatedly on the transparent electrode layer at a predetermined interval, including a non-transparent pattern made of an electrochromic material, further comprising a second transparent substrate bonded to the first transparent substrate including the non-transmissive pattern. It may be. The light transmission pattern may further include a light transmission pattern formed between the non-light transmission patterns. The non-transmissive pattern connection line may be further provided on the outer side of the first transparent substrate to electrically connect the non-transmissive patterns to apply an electrical signal to the non-transmissive pattern. This may be doped.

The first and second transparent substrates may be transparent flexible films or first transparent substrates.

In addition, the switching panel, the first transparent substrate facing each other; A transparent electrode pattern repeatedly formed at a predetermined interval on the first transparent substrate; And an electrochromic layer formed on the entire surface of the substrate including the transparent electrode pattern, and may further include a second transparent substrate attached to the electrochromic layer. In this case, a conductive material may be doped into the electrochromic layer corresponding to the transparent electrode pattern.

In addition, the switching panel, the first transparent substrate; A transparent electrode layer formed on the front surface of the first transparent substrate; An electrochromic layer formed over the transparent electrode layer; And a non-transparent pattern that is repeatedly doped with a conductive material at a predetermined distance in the electrochromic layer, and may further include a second transparent substrate attached to an upper portion of the first transparent substrate including the non-transmissive pattern. have. In addition, the non-transmissive pattern connecting line electrically connecting the non-transmissive patterns to the outside of the first transparent substrate and applying an electrical signal to the non-transmissive pattern may be further configured.

In addition, the switching panel, the first transparent substrate; An electrochromic layer formed on an entire surface of the first transparent substrate; And a non-transparent pattern that is repeatedly doped with a conductive material at a predetermined distance in the electrochromic layer, and may further include a second transparent substrate attached to an upper portion of the first transparent substrate including the non-transmissive pattern. have. In addition, the non-transmissive pattern connecting line electrically connecting the non-transmissive patterns to the outside of the first transparent substrate and applying an electrical signal to the non-transmissive pattern may be further configured.

In addition, the manufacturing method of the display device according to the present invention comprises the steps of preparing a display panel for displaying an image; Selectively implementing a wide viewing angle mode and a narrow viewing angle mode according to whether an electric signal is applied, and preparing a switching panel divided into a light transmitting region and a non-light emitting region by an electrochromic material; And attaching a switching panel to the display panel.

The preparing of the switching panel may include preparing a first transparent substrate; Forming a transparent electrode layer on an entire surface of the first transparent substrate; And coating an electrochromic material on the transparent electrode layer, and then patterning the electrochromic material to form a non-transmissive pattern that is repeatedly disposed at a predetermined interval, preparing a second substrate, and preparing the second substrate. Forming a non-transmission pattern repeatedly disposed at regular intervals on the substrate; And bonding the two substrates bonded together so that the non-transmissive patterns formed on the first and second transparent substrates coincide with each other. In this case, a light transmitting pattern may be formed between the non-light transmitting patterns, and the light transmitting pattern may be formed using photoacryl. The method may further include forming a non-transparent pattern connecting line electrically connecting the non-transmissive patterns of the first transparent substrate and applying an electrical signal to the non-transmissive pattern. Doping may further comprise doping the material.

In addition, preparing the switching panel may include preparing a first transparent substrate; Depositing a transparent conductive material on the first transparent substrate and then patterning the transparent conductive material to form a transparent electrode pattern that is repeatedly disposed at a predetermined interval on the first transparent substrate; And forming an electrochromic layer by coating an electrochromic material on the entire surface of the substrate including the transparent electrode pattern, and bonding a second transparent substrate facing the first transparent substrate on the electrochromic layer. It may further comprise the step of. The method may further include doping a conductive material on the electrochromic layer corresponding to the transparent electrode pattern.

In addition, preparing the switching panel may include preparing a first transparent substrate; Forming a transparent electrode layer on an entire surface of the first transparent substrate; Forming an electrochromic layer by coating an electrochromic material on the transparent electrode layer; And forming a non-transmissive pattern repeatedly disposed at a predetermined distance by doping a conductive material to the electrochromic layer, and a second transparent substrate facing the first transparent substrate on the electrochromic layer. It may further comprise the step of bonding. The method may further include forming a non-transmissive pattern connection line electrically connecting the non-transmissive patterns to the outer periphery of the first transparent substrate and applying an electrical signal to the non-transmissive pattern.

The preparing of the switching panel may include preparing a transparent first transparent substrate; Coating an electrochromic material on the first transparent substrate to form an electrochromic layer; And forming a non-transmissive pattern repeatedly arranged at a predetermined distance by doping a conductive material to the electrochromic layer, and preparing the second transparent substrate; Coating an electrochromic material on the first transparent substrate to form an electrochromic layer; Doping the electrochromic layer with a conductive material to form a non-transmissive pattern repeatedly arranged at a predetermined distance; And bonding the first and second substrates to match the non-transmission pattern. The method may further include forming a non-transmissive pattern connection line electrically connecting the non-transmissive patterns to the outer periphery of the first and second substrates and applying an electrical signal to the non-transmissive pattern.

As described above, the present invention provides a display device capable of selectively implementing a wide viewing angle mode and a narrow viewing angle mode by forming a switching panel for implementing a wide viewing angle mode and a narrow viewing angle mode using an electrochromic material. That is, in the switching panel of the present invention, when the electric signal is applied, the color of the electrochromic material is changed, thereby selectively forming a non-transmissive area. Therefore, the viewing angle is limited by the non-transmissive area to implement a narrow viewing angle mode. When no electric signal is applied, the switching panel forms a transmissive area on the front surface and implements the original viewing angle of the display panel.

Hereinafter, a display device capable of selectively implementing a wide viewing angle mode and a narrow viewing angle mode and a manufacturing method thereof will be described in detail with reference to the accompanying drawings.

1 briefly illustrates a configuration of a display device according to the present invention.

As shown in the figure, the display device 100 of the present invention is disposed in front of the display panel 110 and the display panel 110 for displaying an image, to selectively implement the narrow viewing angle mode and wide viewing angle mode It is configured to include a switching panel 120.

The display panel 110 may be selected from one of a liquid crystal display (LCD) panel, a plasma display panel (PDP) panel, a field emission display (FED) panel, an electric luminescence (EL) panel, and a vacuum fluorescent display (VFD) panel. In addition, all flat panel display panels can be applied. In addition, when the non-light emitting panel is used as the display panel 110, such as an LCD (Liquid Crystal Display) panel, the backlight 130 for generating light on the display panel 110 should be separately configured.

The switching panel 120 selectively implements a narrow viewing angle mode and a wide viewing angle mode according to whether an electric signal is applied. That is, when no electrical signal is applied to the switching panel 120, the switching panel 120 forms a light-transmitting area in all areas, thereby implementing a wide viewing angle mode, and when the electric signal is applied, By selectively forming a non-transmissive area to implement a narrow viewing angle mode. At this time, it is possible to selectively form the transmissive region and the non-transmissive region in accordance with the presence or absence of an electrical signal by using an electrochromic material.

In general, electrochromic materials are materials in which the color and color of the color change visually due to changes in absorption wavelengths or absorption rates due to oxidation and reduction reactions. Inorganic electrochromic materials and organic electrochromic materials depending on the type of material Separated by.

Inorganic electrochromic materials include WO ₃ , NiO _x H _y , Nb ₂ O ₅ , V ₂ O ₅ , TiO ₂ , MoO _3, and the like. The organic electrochromic materials include an electrochromic electrolyte solution and an electrochromic polymer. have.

The electrochromic material used in the present invention forms a non-transmissive area as an electric signal is applied, where the non-transmissive area means an area that is blocked from viewing by the viewer of the image shown on the display panel 110. The light transmissive area refers to an area made transparent so that the image displayed on the display panel 120 can be seen as it is. In this case, the non-light-transmitting region actually has a width that is not visible to the viewer, and merely serves to limit the viewing angle.

The driving principle of the wide viewing angle mode and the narrow viewing angle mode of the switching panel according to the present invention will be described in more detail with reference to FIG. 2, as shown in the drawing. The transparent substrate 131 and 133 and the two substrates 131 and 133 are composed of a non-transmission pattern 135 formed in a partitioned form at a predetermined interval, wherein the non-transmission pattern 135 is a light transmission mode or a non-light transmission mode depending on the signal applied Is implemented selectively, and in particular, when a signal is applied to implement a non-light-transmission mode. When a signal is applied to the non-light emitting pattern 135 to implement a non-light emitting mode, the viewing angle is narrowed. That is, the non-transmissive pattern 135 is not substantially seen by the observer, but because it has a constant height, it serves to reduce the viewing angle by blocking the light transmitted to the side. On the other hand, when the non-transmissive pattern 135 implements the light-transmitting mode, the non-transmissive pattern 135 can no longer block the light, thereby widening the viewing angle.

Meanwhile, the narrow viewing angle may be controlled by adjusting the height H of the non-transmission pattern 135, and the higher the H, the narrower the viewing angle in the narrow viewing angle mode. For example, the non-transmissive pattern may have a height H of 150 μm or more. In addition, the non-transmission pattern 135 may be formed at intervals of 80 to 100 μm, and the width of the non-transmission pattern 135 should not exceed 20 μm. This is to prevent the non-transmission pattern 135 from being perceived by the observer in the narrow viewing angle mode.

As described above, the present invention is provided in the form of a partition wall having a predetermined height, and by selectively applying the non-transmission pattern 135 for implementing the light transmission mode and the non-light transmission mode according to the application of the signal, selectively switching the narrow viewing angle and the wide viewing angle do. In this case, the non-transmission pattern 135 is formed of an electrochromic material. As described above, the electrochromic material selectively implements a light emission mode and a non-light emission mode by applying an electric signal. Therefore, the present invention devised a switching panel by applying such characteristics of the electrochromic material.

On the other hand, the non-transmissive pattern 235 may be formed by coating the electrochromic material and then patterning, and a separate electrode for applying a signal is formed. In addition, the electrode may be formed over the entire surface of the substrate, or selectively formed only in a region where the non-transmissive pattern 235 is located.

3A and 3B schematically illustrate a switching panel according to an embodiment of the present invention. FIG. 3A is a plan view, and FIG. 3B is a cross-sectional view taken along line II ′ of FIG. 3A.

As shown in the figure, the switching panel 220 according to the present embodiment includes a first transparent substrate 201, a transparent electrode layer 211 formed on the front surface of the first transparent substrate 201, and the transparent electrode layer 211. The non-transmissive pattern 235 is formed to have a predetermined height on a predetermined distance).

The transparent electrode layer 211 may be formed by depositing a transparent conductive material such as indium tin oxide (ITO) or indium zinc oxide (IZO) on the first transparent substrate 201 through sputtering, and the non-transparent pattern 235 may be formed by coating an electrochromic material on the transparent electrode layer 211 and then patterning the electrochromic material layer through a photolithography method.

The non-transmission patterns 235 form a non-transmission region B by applying an electric signal, and the transparent electrode layer 211 exposed between the non-transmission patterns 235 forms a transmission region T. .

In addition, in order to apply an electrical signal to the non-transmissive pattern 235, a non-transmissive pattern connecting line 233 for connecting the non-transmissive pattern 235 as one outside the first transparent substrate 201 is formed. It may be. On the other hand, by doping the non-transmissive pattern 235 with a conductive material, it is easier to discolor by an electrical signal, thereby forming a light transmitting region (T) with a relatively small current.

In the switching panel 220 configured as described above, when an electrical signal is applied to the non-transmissive pattern 235, the non-transmissive region B is formed at a predetermined height at a predetermined distance due to the characteristics of the electrochromic material. By blocking the light transmitted through, the liquid crystal display device of the narrow viewing angle mode is implemented. On the other hand, when no electrical signal is applied to the non-transmissive pattern 235, the non-transmissive pattern 235 is converted to a light transmitting area, and all the light transmitted through the upper portion of the display panel is switched by the switching panel 220. Since it is not disturbed, it implements wide viewing angle mode.

On the other hand, the second transparent substrate 202 may be further configured on the first transparent substrate 201 including the non-transparent pattern 235, as shown in FIG. A non-transparent pattern 235b is formed on the second transparent substrate 202 to form a height (150 μm), and is matched with the non-transparent pattern 235a formed on the first transparent substrate 201 to attach it. You may.

In addition, a transparent pattern may be further formed between the non-transmissive patterns, that is, in the region in which the light transmitting region T is formed in the narrow viewing angle mode.

5A and 5B illustrate another embodiment of the present invention in which a transparent pattern is additionally formed in the light-transmitting region. FIG. 5A is a plan view and FIG. 5B is a cross-sectional view taken along line II-II 'of FIG. 5A. At this time, in the present embodiment, all components except for the transparent pattern are the same as in the previous embodiment, and detailed description of the same configuration will be omitted.

As shown in the figure, the switching panel 320 according to the present embodiment includes a first transparent substrate 301, a transparent electrode layer 311 formed on an entire surface of the first transparent substrate 301, and the transparent electrode layer ( The non-transmissive pattern 335 is formed to have a predetermined height on the 311, and a transparent pattern 337 is formed between the non-transmissive patterns 335. In this case, the transparent pattern 337 may be formed by coating a transparent organic material such as photo acryl on the first transparent substrate 301 on which the non-transparent pattern 335 is formed, and then patterning the transparent organic material. In this case, the non-transmissive pattern connecting line 333 may be further configured to connect the non-transmissive patterns 335 to one outside of the first transparent substrate 301 to apply an electric signal. 335 may further be doped with a conductive material.

In order to protect the light transmitting pattern 337 and the non-light transmitting pattern 335, a second transparent substrate 302 may be further formed thereon.

In addition, the transparent electrode may be omitted, and only the non-transparent pattern may be formed on the first transparent substrate.

6A and 6B illustrate another embodiment of the present invention in which the transparent electrode is omitted, and FIG. 6B is a cross-sectional view taken along line III-III ′ of FIG. 6A.

As shown in the figure, the switching panel 420 according to the present embodiment is a non-transparent pattern 435 repeatedly formed at a predetermined distance on the first transparent substrate 401 and the first transparent substrate 401. It is composed.

As in the previous embodiments, the non-transmissive patterns 435 form the non-transmissive region B by applying an electric signal, and the first transparent substrate 401a exposed between the non-transmissive patterns 435. Silver forms a light transmitting area (T).

In this case, in order to apply an electrical signal to the non-transmissive pattern 435, a non-transmissive pattern connecting line 433 is formed to connect the non-transmissive pattern 435 to one outside of the first transparent substrate 401. can do. By doping the non-transmissive pattern 435 with a conductive material, the non-transmissive region can be made more sensitive to an electric signal, thereby obtaining a desired non-transmissive region with a relatively small current. The second transparent substrate 402 may be further configured on the first transparent substrate 401 including the non-transparent pattern 435.

In addition, a transparent pattern may be further formed between the non-transmissive patterns 435, that is, in the transmissive area T.

 7A and 7B illustrate another embodiment of the present invention in which a transparent pattern is formed in a transmissive region. FIG. 7A is a plan view, and FIG. 7B is a cross-sectional view taken along line IV-IV 'of FIG. 7A.

As shown in the drawing, the switching panel 520 according to the present embodiment includes a first transparent substrate 501 and a non-transmission pattern 515 having a predetermined height at a predetermined distance on the substrate 501. The transparent pattern 517 is formed between the non-transmissive patterns 515. In this case, the transparent pattern 517 may be formed by coating a transparent organic material such as photo acryl on a substrate on which the non-transmissive pattern 515 is formed and then patterning the transparent organic material. In this case, a non-transmissive pattern connection line 533 may be formed on the outer edge of the film to electrically connect the non-transmissive patterns 515 to apply an electrical signal. Can also be doped.

In addition, a second transparent substrate 502 may be further attached onto the first transparent substrate 501 including the light transmission pattern 517 and the non-light transmission pattern 515, and the light transmission pattern 517 may be non-attached. It may be formed of the same electrochromic material as the light transmission pattern 515.

8A and 8B illustrate another embodiment of the present invention in which a non-transmissive pattern is formed of an electrochromic material. FIG. 8A is a plan view, and FIG. 8B is a cross-sectional view taken along line VV ′ of FIG. 8A.

As shown in the figure, the switching panel 520 according to the present embodiment is composed of a transparent first transparent substrate 501 and an electrochromic material layer formed on the front surface of the first transparent substrate 501, the electrochromic In the water layer, between the non-transmissive patterns 535a repeatedly doped with a conductive material at a predetermined distance (that is, a region in which the conductive material is not doped) is formed of a transmissive pattern 535. In the present embodiment, the non-transmissive pattern 535a and the transmissive pattern 535 are formed of the same electrochromic material, but because the current value at which the discoloration occurs is different, the light transmitting area T and the non-light emitting area B ) Can be formed at the same time. Therefore, doping of the conductive material to the non-transmissive pattern 535a must be performed in this embodiment.

Meanwhile, a transparent electrode pattern may be further formed in the region doped with the conductive material.

9A and 9B illustrate another embodiment of the present invention in which a transparent electrode pattern is added to a non-transmissive region doped with a conductive material. FIG. 9A is a plan view and FIG. 9B is a cross-sectional view of VI-VI ′ of FIG. 9A. to be.

As shown in the figure, the switching panel 620 according to the present embodiment is a transparent electrode pattern 611 repeatedly formed at a predetermined distance on the transparent first transparent substrate 601 and the first transparent substrate 601. ), A non-transmissive pattern 635a for forming a non-transmissive region B and a light-transmitting pattern 635 for forming a transmissive region T on the transparent electrode pattern 611.

The transparent electrode pattern 611 may be formed by depositing a transparent conductive material such as indium tin oxide (ITO) or indium zinc oxide (IZO) on the first transparent substrate 601 through a sputtering method. The non-transmissive pattern 635a is coated with an electrochromic material on the entire surface of the first transparent substrate 601 including the transparent electrode pattern 611 and then conductive in a region corresponding to the transparent electrode pattern 611. By doping the material, it can be coated.

In addition, the non-transmissive pattern 635a receives an electrical signal by the transparent electrode pattern 611 formed at a lower portion thereof, and electrically connects the transparent electrode patterns 611 to the outside of the first transparent substrate. A transparent electrode pattern connection line 633 for applying an electric signal may be further formed. In this case, the second transparent substrate 602 may be attached onto the first transparent substrate 601 including the light transmitting pattern 635 and the non-light transmitting pattern 635a.

In the switching panel 620 configured as described above, the non-transmissive pattern 635a forming the non-transmissive region and the transmissive pattern 635 forming the transmissive region are both made of an electrochromic material. Since the conductive material is doped in, the discoloration of the electrical signal occurs more easily than the light transmission pattern 635. That is, the current value necessary for discoloring the non-transmission pattern 635a is smaller than the current value required for discoloring the light transmission pattern 635, although the non-transmission pattern 635a and the light transmission pattern 635 are the same electricity. Even if it is formed of a color change material, since the current value at which discoloration occurs is different, the light transmitting area T and the non-light emitting area B can be formed simultaneously.

In addition, compared with the previous embodiment (Figs. 8A and 8B), the current value for generating the non-transmissive area B is smaller, which is advantageous in terms of power consumption.

As described above, the present invention provides a display device using an electrochromic material as a viewing angle control plate, wherein the electrochromic material is formed at a predetermined distance to form a non-transmissive region in the form of a partition wall, thereby wide viewing angle mode and narrow viewing angle. Allows for selective switching of modes. That is, in the wide viewing angle mode and the narrow viewing angle mode, the switching panel is divided into a light transmitting area and a non-light transmitting area. In the present invention, the non-light transmitting area is formed of an electrochromic material, so that the viewing angle can be freely switched depending on whether a signal is applied or not. do.

The basic concept of the present invention relates to a display device capable of switching a wide viewing angle mode and a narrow viewing angle mode using an electrochromic material, and although the present invention is not described in detail in the detailed description of the present invention, the present invention relates to an electrochromic material. It will include all the display devices to adjust the viewing angle.

As described above, according to the present invention, by using an electrochromic material, a display device capable of freely adjusting a viewing angle according to the presence or absence of an electrical signal is provided.

Claims (36)

A display panel displaying an image; And A first transparent substrate attached to the display panel and divided into a light transmitting region and a non-light emitting region which is repeatedly defined at regular intervals in the light transmitting region; A transparent electrode layer formed on the front surface of the first transparent substrate; And a non-transmissive pattern formed on the upper surface of the transparent electrode layer in a region corresponding to the non-transmissive region and formed of an electrochromic material so as to be transparent or opaque according to the presence or absence of an electrical signal. Display device comprising a. The method of claim 1, The width of the light emitting area is a display device, characterized in that 80 ~ 100㎛. The method of claim 1, And the width of the non-transmissive area is 20 μm or less. The method of claim 1, A narrow viewing angle is determined by the height of the non-light emitting pattern. The method of claim 1, The display panel is a liquid crystal display (LCD) panel. The method of claim 5, And a backlight for generating light in the display panel. delete The method of claim 1, And a second transparent substrate bonded to the first transparent substrate including the non-transmissive pattern. The method of claim 1, And a light transmitting pattern formed between the non-light emitting patterns. The method of claim 1, And a non-transmissive pattern connecting line electrically connecting the non-transmissive patterns to the outer side of the first transparent substrate to apply an electrical signal to the non-transmissive pattern. The method of claim 1, And a conductive material doped into the non-transmissive pattern. A display panel displaying an image; And A first transparent substrate attached to the display panel; A transparent electrode pattern repeatedly formed at a predetermined interval on the first transparent substrate; And an electrochromic layer formed on an entire surface of the first transparent substrate including the transparent electrode pattern. Display device comprising a. The method of claim 12, And a second transparent substrate bonded to the first transparent substrate including the electrochromic layer. The method of claim 12, And a conductive material is doped into the electrochromic layer corresponding to the transparent electrode pattern. A display panel displaying an image; And A first transparent substrate attached to the display panel; A transparent electrode layer formed on the entire surface of the first transparent substrate; An electrochromic layer formed over the transparent electrode layer; And a non-transmission pattern doped repeatedly with a conductive material at a predetermined distance in the electrochromic layer. Display device comprising a. 16. The method of claim 15, And a second transparent substrate bonded to the first transparent substrate including the non-transparent pattern. 16. The method of claim 15, And a non-transmissive pattern connecting line electrically connecting the non-transmissive patterns to the outer side of the first transparent substrate to apply an electrical signal to the non-transmissive pattern. delete 16. The method of claim 15, And a second transparent substrate bonded to the first transparent substrate including the non-transparent pattern. 16. The method of claim 15, And a non-transmissive pattern connecting line electrically connecting the non-transmissive patterns to the outer side of the first transparent substrate to apply an electrical signal to the non-transmissive pattern. The method of claim 1, The display panel is one of a plasma display panel (PDP) panel, a field emission display (FED) panel, an electric luminescence (EL) panel, and a vacuum fluorescent display (VFD) panel. Preparing a display panel displaying an image; Selectively implementing a wide viewing angle mode and a narrow viewing angle mode according to whether an electric signal is applied, and preparing a switching panel divided into a light transmitting region and a non-light emitting region by an electrochromic material; And Attaching a switching panel to the display panel. 23. The method of claim 22, Preparing the switching panel, Preparing a first transparent substrate; Forming a transparent electrode layer on an entire surface of the first transparent substrate; And Coating an electrochromic material on the transparent electrode layer, and then patterning the electrochromic material to form a non-transmission pattern that is repeatedly disposed at a predetermined interval. 24. The method of claim 23, Preparing a second transparent substrate; Coating an electrochromic material on the second transparent substrate, and then patterning the electrochromic material to form a non-transmission pattern that is repeatedly disposed at a predetermined interval; And And bonding the non-transmissive patterns formed on the first and second transparent substrates to coincide with each other. The method of claim 23 or 24, And forming a light transmitting pattern between the non-light emitting patterns. 24. The method of claim 23, And electrically connecting the non-transmissive patterns of the first transparent substrate and forming a non-transmissive pattern connection line for applying an electrical signal to the non-transmissive pattern. 24. The method of claim 23, And doping a conductive material into the non-transmissive pattern. 23. The method of claim 22, Preparing the switching panel, Preparing a first transparent substrate; Depositing a transparent conductive material on the first transparent substrate and then patterning the transparent conductive material to form a transparent electrode pattern that is repeatedly disposed at a predetermined interval on the first transparent substrate; And And forming an electrochromic layer by coating an electrochromic material on the entire surface of the substrate including the transparent electrode pattern. The method of claim 28, And bonding a second transparent substrate facing the first transparent substrate to the upper portion of the electrochromic layer. The method of claim 28, And doping a conductive material into the electrochromic layer corresponding to the transparent electrode pattern. 23. The method of claim 22, Preparing the switching panel, Preparing a first transparent substrate; Forming a transparent electrode layer on an entire surface of the first transparent substrate; Forming an electrochromic layer by coating an electrochromic material on the transparent electrode layer; And forming a non-transmissive pattern repeatedly arranged at a predetermined distance by doping a conductive material to the electrochromic layer. The method of claim 31, wherein And bonding a second transparent substrate facing the first transparent substrate to the upper portion of the electrochromic layer. The method of claim 31, wherein And forming a non-transmissive pattern connecting line electrically connecting the non-transmissive patterns to the outer side of the first transparent substrate and applying an electrical signal to the non-transmissive pattern. Way. 23. The method of claim 22, Preparing the switching panel, Preparing a first transparent substrate; Coating an electrochromic material on the first transparent substrate to form an electrochromic layer; And And forming a non-transmissive pattern repeatedly arranged at a predetermined distance by doping a conductive material to the electrochromic layer. 35. The method of claim 34, Preparing a second transparent substrate; Coating an electrochromic material on the second transparent substrate to form an electrochromic layer; Doping a conductive material to the electrochromic layer to form a non-transmissive pattern repeatedly disposed at a predetermined distance; And And bonding the first and second substrates together such that the non-transmissive patterns of the first and second transparent substrates coincide with each other. 35. The method of claim 34, And forming a non-transmission pattern connecting line electrically connecting the non-transmission patterns to the outer periphery of the first and second substrates and applying an electrical signal to the non-transmission pattern. Manufacturing method.

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